Friday night, members of the Sacramento County Sheriff's Gang Suppression Unit (GSU) found a car connected to an investigation, the sheriff's office said. Two people were sitting inside of the car. The detectives tried to "make contact" with the people in the car, but at some point during the encounter, shots were fired.
Police in Grafton, WI, about 20 miles (32 kilometers) north of Milwaukee, said in a statement that the department, FBI and Food and Drug Administration are “actively” investigating.
In total, 19 state felony charges for firearms and terror-related acts were filed against seven individuals known to be members or associates of the group known as Wolverine Watchmen.
The charges filed on Tuesday give the first indication of what police believe is a possible motive, that the shooting is the result of a robbery. A detective wrote in court records that the trio shot and killed Det. James Skernivitz and Scott Dingess, 50, during an attempted robbery.
A $35,000 reward is being offered for information leading to an arrest and conviction in the nurder of Detective Skernivitz.